Bad Imperial Master

He was a professional poker player in his previous life and read a lot of history. After time travel, he became a teacher to the eight-year-old emperor. He didn't teach the Four Books and Five Classics - he only taught gambling. How to read people, how to place bets, how to make a comeback from a bad deck of cards. The civil and military officials of the entire dynasty thought he was a drunkard and useless person. The chief eunuch wants to kill him. The Queen Mother stared at him from behind the curtain. The Prime Minister was waiting for him to make a mistake. The eight-year-old emperor asked: "Teacher, can we win?" "I don't know. But I am a layman, and there is only one thing I am good at - gambling." Later the emperor asked him: "Teacher, what did you teach me?" He said: "I am a layman, just helping others. Your Majesty played the chess game himself."